REVENUE RECOGNITION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	$ 806	$ 794	$ 1,561	$ 1,615
Contract with Customer, Liability, Current	3		3		$ 3
Europe Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	192	181	380	371
Latin America Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	203	194	380	387
North America Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	411	419	801	857
Uncoated Papers | Europe Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	168	162	333	332
Uncoated Papers | Latin America Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	193	181	360	361
Uncoated Papers | North America Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	398	398	772	814
Market Pulp | Europe Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	24	19	47	39
Market Pulp | Latin America Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	10	13	20	26
Market Pulp | North America Segment [Member]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
NET SALES	$ 13	$ 21	$ 29	$ 43